61904873 has 2 divisors, whose sum is σ = 61904874. Its totient is φ = 61904872.

The previous prime is 61904867. The next prime is 61904893. The reversal of 61904873 is 37840916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58415449 + 3489424 = 7643^2 + 1868^2 .

It is a cyclic number.

It is not a de Polignac number, because 61904873 - 2⁶ = 61904809 is a prime.

It is a super-2 number, since 2×61904873² = 7664426602292258, which contains 22 as substring.

It is equal to p_3668285 and since 61904873 and 3668285 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (61904833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30952436 + 30952437.

It is an arithmetic number, because the mean of its divisors is an integer number (30952437).

Almost surely, 2^61904873 is an apocalyptic number.

It is an amenable number.

61904873 is a deficient number, since it is larger than the sum of its proper divisors (1).

61904873 is an equidigital number, since it uses as much as digits as its factorization.

61904873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 61904873 is about 7867.9649846704. The cubic root of 61904873 is about 395.5866367336.

The spelling of 61904873 in words is "sixty-one million, nine hundred four thousand, eight hundred seventy-three".